Suction roll



A. N. RUSSELL ET AL SUCTION ROLL Original Filed June 5, 1924 2 Sheets-Sheet.

July 24, 1928.

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July 24, 1928. 1,678,083

A N. RUSSELL ET AL SUCTION ROLL Original Filed June 5, 1924 2 Sheets-Sheet 2 INVENTORS ANDREW/{RUSSELL BERNARDAMALK/N ATTORNE s Patented J uly 24, 1928.

- UNITED STATES PATENT OFFICE.

ANDREW N. RUSSELL AND BERNARD A. MALKIN, OF LACHINE, QUEBEC, CANADA, AS-

SIGNORS TO THE PAPER AND TEXTILE MACHINERY COMPANY, OF SANDUSKY, OHIO.

SUCTION ROLL.

Application filed June 3, 1924, Serial No. 717,588. Renewed February 15, 1926.

This invention relates to new and useful improvements in suction rolls for paper making machines, and the object of the invention is to provide a suction roll which 6 will be easily dismantled for repairs and inspection, and which will allow. said dismantling to be done without breaking or interfering with the water-tight packing in the bearing between the suction roll and the 1 suction box.

Another object is to provide a suction roll for paper making machines, which will allow easy and fine adjustments to be made in the sealing medium between the inner surface of the suction' roll and the suction box.

A further object is .to provide a roll of the class stated which will be economical and efficient in operation and maintenance.

In an illustrative embodiment of our invention shown in the annexed drawings, we provide a suction roll, within which is mounted the suction box. The roll is adapted for continuous movement at the same speed as the wire or felt of the paper making machine, and the suction box which is mounted within the roll is adapted to remain at all times in air-tight contact with the inner surface of the roll. Between the roll and the box, packing is provided to seal the box, and we have mounted the packing in channels, on the underside of which are mounted wedge-shaped members adapted to engage with other wedges secured to draw bars mounted in the channel guides formed in the suction box. The wedges maybe attached to the channel guides. The draw bars.

or channels are moved in the longitudinal direction by means of adjusting screws. The draw bars or channels rising on the wedges in the channel guides raisethe packing until it contacts with the inner surface of the suction roll. The suction box is mounted on self-aligning water-tight bearings at each end of the roll, said bearings being .so constructed that the suction box may be withdrawn without disturbing the water-tight packing in the bearings.

In the drawings:

Figure 1 is a longitudinal sectional elevation of the suction roll.

Figure 2 is an end view of the suction roll.

Figure 3 is a sectional elevation of the roll taken on the line 33, Figure 1.

Figure 4 is asectional elevation taken on the line 44, Figure 1.

Figure 5 is an end elevation showing the draw bar adjusting means between the suction box and the roll.

Figure 6 is a sectional elevation taken on the line 6- 6, Fi are 5.

Figure 7 is a p an view of the adjusting means shown in Figure 5.

Figure 8 is a side elevation showing the channel adjusting means between the suction box and the roll.

Referring morepartieularly to the drawings, 11 designates a suction, couch or press roll, the end castings 12 and 13 of which are secured to the roll by means of the screw bolts '14. The end casting 12 is provided with an outwardly extending portion 15 which forms a journal, which rotates in the bearing 17 mounted on the frame 18 of the machine in any suitable manner. The end casting 13 is also provided with an outwardly extending portion 19, which forms a journal which rotates in the bearing 20, also mounted in the frame 1-8. The bearings are provided with the necessary water-tight packings 21 and lubricating means 22. Within the roll is mounted the suction box 23, one end of which isniounted on the end 24 of the suction pipe '25, which passes through an aperture 25 formed in the journal end 15. As the roll rotates around the pipe, a self-aligning ball bearing 26 is mounted-between the pipe and the end casting 12, which is provided with an inwardly extending portion adaptedto form 2 410118- ing 27 to engage with the outer face of the ball hearing. A shoulder 28 may be provided to position the-bearing on the pipe and a cap 29 having water-throwing edges 30 may be secured to the housing 27 to pro- 34 of the pipe by means of the hinged bolts 36, which engage with the lugs 36 formed in the elbow. -The elbow ma be connected to a vertically disposed drain pipe 37 by means of the slip coupling 38. The shower pipe 39 passes through the centre of the pipe and through a bearing 41 formed in the ,elbow. A gland may be fitted into a recess 42 having a ring of sealing material 43 to seal the bearing formed in the elbow. The other end 44 of the suction box may be provided with a recess 45 adapted to receive the shaft 46, one end of which is secured to the journal 19 by any suitable means. A sleeve 47 is mounted on the shaft 46 and a self-aligning bearing 48 is placed between the sleeve and the wall of the recess 45, a shoulder 49 being provided to position said bearing. To protect the hearing from dirt, ooze, or water, a cap 50 is secured to the end of the suction box; and packing rings 51 may be inserted in the groove 52 formed in the cap, said packing forming a sealing medium for the bearing. A guard 53 is secured to the roll, said guard being so positionedthat it encircles the end of the cap 50. The end 54 of the shaft 46 is tapered so that when placing the suction box within the roll, the shaft will easily enter the sleeve 47 and raise the suction box into position.

Figures 3 to 7 inclusive are devoted to the details of the sealing means between the wall of the roll and-the upper edges of the suction box, which are provided with the channel guides 55. Slidably mounted in the guides are the draw bars 57 having the wedges 57 secured thereto. The channels 58 are mounted in the guides and wedges 58 adapted to engage with the wedges on the draw bars are secured to the channels. Packing strips 59 are placed in the channels to form a sealing medium between the roll and the suction box. Bearings 62 may be formed in the suction box and adjusting screws 61 may be rotatably mounted therein and held from longitudinal movement by means of the collars 64. The threaded portions 65 of the screws engage with threaded lugs 60 riveted or otherwise secured to the draw bars mounted in the channel guides, so that on turning the screws the channels are raised or lowered on the wedges, therebyregulating the sealing means between the packing and the inner wall of the roll. The

suction box is sealedat its end by means of the adjustable packing heads 67, which are mounted on the screws 66. The screws are rotatably mounted in'the heads 67 and are held in position by means of the collars 70. The threaded portion 68 of the screws or felt of a paper making machine.

apertures or perforations 71, which allow water abstracted from the sheet to pass to the bottom 72 of the box, said bottom being tapered towards the drain pipe end of the box to assist in draining oil the water.

In Figure 8 we have shown a modification in which the wedges 58 are formed in the channel guides and the threaded lugs are secured to the channels. By rotating the screw 61, the channels rise or fall on the wedges formed in the guides. Various other modifications may be made with out departing from the spirit of the invention.

In operation, the packing heads are adjusted by means of the screws 66 to suit the width of the pulp sheet carriedby the wire The roll rotates in the bearings mounted on the frame and the suction box remains stationary and in contact with the inner wall of the roll. To reduce the frictional resistance between the suction box and the roll, self-aligm ing ball bearings are placed between them. The packing medium between the suction rolls and the suction box is very easily adjusted, being mounted in channels which are mounted on wedge shaped members secured to the underside and adapted to engage with the wedges of the draw bar, which is slidably mounted in the channel guides formed in the suction box. The screws are rotatably mounted in the box and, .when turned, raise the packing strips to seal the joint between the box'and the roll by pulling the draw bar and causing the sealing medium channels to ride up the inclined side of the wedges on the underside of the channel. The roll is very easily dismantled for repairs or inspection. The screw bolts 14 are loosened, leaving the end casting 12 free. The joints in the drain pipe are then loosened and the suction box can then be withdrawn without interfering with or loosening of the packing rings between the journal 15 and the drain pipe. The watertight joint between the sleeve 47 and the cap 50 is not interfered with as said sleeve is withdrawn from the suction box'. In erecting the device, the suction box is placed within the roll and the shaft 46, being tapered, enters the sleeve easily and gradually raisesthe suction box into position.

This arrangement greatly reduces the cost of maintenance and facilitates the operation of dismantling and re-erecting the suction box. In the modificatiomthe channel with the packing mounted therein is raised by pulling it along the guides,-adjusting screws being provided for this purpose. The wedges on the underside of the channels engage with the wedges formed in or secured to the box. The channel when pulled longitudinally raises the packing upwardly to seal the box.

7 underside of the channels, wedges mounted inthe guides and adapted to engage with 'the channel'wedges, and means connected to one set of the wedges so that on movement of same the channels will rise or fall in-the Having thus described. our whatwe claim is I 1. In a carrier roll for paper making machines or the like, a roll, means for rotatably supporting said roll, a suction box mounted invention,

within the roll, guides formed in the suction. box, channel-shaped members mounted in the guides, packing or sealing means within the channel members. and adapted to contact with the roll, wedges secured directly to the guides. p y

2. In a suction, couch or press roll for paper -making machines, 'a roll, means for 7 rotatably supporting said roll, a suction box mounted within the roll, channel guides formed in the-upper-edges of the suction box,channels mounted in the guides, wedges secured directly to the underside of the channels, draw bars mounted in the channel guides, wedges secured to the draw bars and adapted to frictionally engage with the wedges on the underside of thegchannels,

' sealing means between the channel and the the drawbar to raise or lower the sealing.

roll, and screw adjusting meansjsecured to the suction box and adapted. to engage-with means through the medium of the wedges.

3. In a suction roll for paper making machines or thelike, a roll, means for rotatably supporting said roll, a-suction box .mounted within the roll, channel guides formed, in the suction box, channels mounted in the guides, sealing. means between the'channels and the roll, wedge type adjusting means between the channel guides and the channels for positioning the said sealing means, means secured to the suction boxifor operating said wedge type adjusting means, antifriction bearings between the roll and the suction box, sealing means for said antifriction. bearings,and means to allow withdrawal of'the suction box-without interfering with or damaging the sealing means for rotatably supporting the journals, a s uction box mounted within "the roll, sealing -means between the suction box and the roll,

aself-aligning antifrictionbearing between 'for the bearings.

paper making machines," a roll, detachable- 4. In a suction, couch or press roll for journals at the ends of said roll, bearings one -end of the suction box and the roll 'ournal, sealing means for the self-aligning bearings an'dthe journals, a-shaft's'ecured to one of the journals, of the roll adapted to support the other end of the suction box, a sleeve mounted on said shaft, an antifriction bearing between the sleeve and the suction box, sealing means for the lastmentioned antifriction bearing, and means formed in I rable engagement therewith.

the shaft to allow easy withdrawal and erection of the suction box without interfermg withany of the seahng means. I

5. A suctlon roll comprising, 1n combination, a "roll having a detachable head; .a .suction box in the roll having a tubular member extending through said detachable head-;,bearings between the roll-and suction box rotatably supporting one from the other;

one of said bearings carried by said' detach-; able head, the other bearing being carried by an end of the suction box, and a spindlerem ovably inserted in the other bearing detachablyconnecting the opposite head of the roll with the correspondingend of the suction box; whereby the roll and suctionbox may besep'arated one from another without disturbingsaid bearings upon unfastening said detachable head. r Y

' 6. The combination of a suction roll equipped I with detachableheads I carrying the roll journals, a suction box mounted within the roll and provided with a recess at each-end, a drain pipe passing through one of the heads and its journal, and having its .innerend enteredinto one of the recesses of the suction box to provide 'a support therefor, a sealed ball bearing interposed between the drain pipe-and an inwardly extending-portion of the said head, an inwardly projectingspindle carried by the remain- .ing head,- and a sealed ball bearing contained and adapted to fit upon. the

7 A suction roll. comprising, in combination, a roll; 'a suction box therein; annular roller bearings interposed between the roll and box rotatably supporting one from-the other; said roll having a detachable head in the remaining. recess of thesuction box spindle in se acarrying. one of said 'bearings;..the opposite bearing being carried by the box, and the opposite head of the roll having an inwardly protruding spindle removably inserted in said opposite bearingysubstantially as and for the purpose described. 1

8; A suction roll comprising, in combination, a roll having journals including a. detachable tubular journal; a stationary suction box in the roll having a pipe extension through said detachable tubular journal; the opposite journal having a coaxial spindle projecting toward said tubular journal into the roll; and annular roller bearings at opposite ends of the box supporting it on said pipe extending through one end of the roll;

said box adapted to be withdrawn from the roll through said end; said roll having an inwardly protruding spindle at its opposite end; r011 supporting bearings; means supporting said pipe extension -and thereby supporting the box at one end; and means comprising an annular roller bear ng carried by the opposite end of said box, into which said spindle is removably inserted, supporting said opposite end of the box from and within the roll.

10. A suction roll comprising, in combination, a roll having reducedtubular journals, rollsupporting structures having bearings for said journals, a stationary suction box in the roll having packings engaging the inthroughsaid mein ers, meansfor regulating the pressure of the suction box .packings on the interior surfacebf the roll, and means for angulally adjusting the position of the suction box. i

In Witness whereof, we have hereunto set our hands. I

BERNARD A. MALKIN. ANDREW N. RUSSELL; 

